几天前，我在笔记本电脑上安装了 Debian。今天我想安装 Sublime Text 3 并想将他们的 repo 添加到我信任的 repo 中。进入时
sudo add-apt-repository ppa:webupd8team/sublime-text-3
在我的终端中，我得到以下输出：
gpg: keybox '/tmp/tmpninimrhg/pubring.gpg' created
gpg: /tmp/tmpninimrhg/trustdb.gpg: trustdb created
gpg: key C2518248EEA14886: public key "Launchpad VLC" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg: imported: 1
gpg: no valid OpenPGP data found.
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python3.5/threading.py", line 914, in _bootstrap_inner
self.run()
File "/usr/lib/python3.5/threading.py", line 862, in run
self._target(*self._args, **self._kwargs)
File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 688, in addkey_func …